## Articles

**John Haigh**uses Game Theory to find the answers, and looks at his World Cup predictions from last issue.

*Plus*meets mathematician, author and broadcaster

**Simon Singh**to find out about the science of secrecy.

**Tom Körner**speculates on the historical reasons why computers were invented when they were.

**John Conway**believes they are going to want to talk mathematics. He talks to

*Plus*about his

*Life*game, artificial life and what we will have in common with extraterrestrials.

**Paulus Gerdes**takes us on a tour of the mathematical properties of some beautiful designs inspired by the traditional art of Angolan tribespeople.

**C. J. Sangwin**shows us how eighteenth-century mathematician Leonhard Euler solved one of the foremost infinite series problems of his day.

**Brian Butterworth**tells us about research showing that even newborn babies have a basic understanding of number. It seems we are all mathematicians!

**Professor Kip Thorne**shows us how to eavesdrop on these cosmic events by watching for telltale gravitational waves.